Improvement in steam-engine-piston packing



.PEERS. PHDfO-LITHOGRAFHER. WASHINGTON. DE C.

' dilated tang aient dimite.

Latas Patent' No. 96,284, met october 26,1869.,

IMPROVEMENT IN STEAM-ENGINE-PISTON PACKING. i

The Schedule referred to in these Letters Patent and making part o! the same.

To all whom it may concern:

B e it known that I, EDWARD SULLIvAN, of Pittsburg, in the county of Allegheny, and State of Pennsylvania, have invented a new and useful Ii'nprovement in Packingbr Pistons of SteamEngines, the 'same being an improvement on the piston-packing for which Letters Patent of the United States' were granted 'to me, and bearing date, April 9, 1867; and I do hereby declare that the following is a full, clear, and exact description of my present invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the constructionof the laps and joints of metallic packing-rings of piston-packing, so that said laps and joints shall be formed in the said rings, in the manner hereinafter described. y

To enable others skilled in the art to make and use lmy invention, I will proceed to describe its const-ruction and operation.l

In the accompanying drawings, which form part-of my specification- Figure l is an edge view of asection of my improved metallic packing-rings.

Figures 2 and 3 are top views of the same, and represent diiierent forms ofl joints between the laps;

In the drawings- A represents the metallic packing-ring, which is provided with laps, Band C, which laps are arranged,

with-relation to each other, so that the lines of separation between them shall be as indicated'at :c f and x4 of tig. 1; or, as indicated at x in lig. 2; or, as indicated at'x, x2, and x, in fig. 3; the lille f remaining the same, as' shown in tig. l.

The manner of marking out the line f is as follows: I take a pair of Compasses, and set one point of them at the point marked o in fig. 1, and, with the other point, mark out the line f. The other lines, zu, 4

x1, :112, x, and a", of separation, and the means used for making said lines and divisions between the laps B and C, I leave to the judgment of the skilled mechanic.

The-object of' making the laps B and C, and separati: g them, in the manner herein described, is to prevent the steam from leaking through at the point B, said ring and laps being constructed and arranged substantially as yherein described.

EDWARD SULLIVAN. YVitnesses:

H. H. BLAKE, T. HOLLAND. 

